Soil and Land Usehttp://www.extension.iastate.edu/soils/node/12875/atom/feed2012-08-15T09:52:19-05:00Webster Serieshttp://www.extension.iastate.edu/soils/page/webster-series2012-08-15T09:52:19-05:002012-08-15T09:52:19-05:00minn